Make TDD review - Local test

Description
As a part of TDD app review for Make app, client ID = 8IP9xxxxxx we are blocked by not working Local Test using same OAuth Callback URL which we are using directly from Make platform and proved to be working.
Current local test resulting in Bad request - see attachment.
All fine and after confirmation = Bad request.

Error?
No error, just unable to proceed further.

Result
All fine and after confirmation = Bad request.Zoom - bad request